Engineering Field-Insensitive Molecular Clock Transitions for Symmetry Violation Searches
Yuiki Takahashi1, Chi Zhang1, Arian Jadbabaie1
1Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, California 91125, USA.
Physical Review Letters
|November 17, 2023
Summary
New molecular techniques suppress external field sensitivity, enabling precise measurements of fundamental symmetry violations beyond the standard model. This advances searches for new physics using molecules.
Area of Science:
- Atomic and Molecular Physics
- Particle Physics
- Quantum Information Science
Background:
- Molecules offer significant amplification for probing fundamental symmetry violations.
- Improving experimental sensitivity necessitates suppressing external electromagnetic field effects.
- Controlling external fields remains a key challenge in precision measurements.
Purpose of the Study:
- To develop methods for simultaneously suppressing sensitivity to external magnetic and electric fields in molecular measurements.
- To maintain large amplification of CP-violating effects while mitigating systematic errors.
- To enhance molecular searches for physics beyond the Standard Model.
Main Methods:
- Engineered radio frequency, microwave, or two-photon transitions were utilized.
- Clock measurements were performed on these engineered transitions.
- The method is compatible with Ramsey measurements and offers internal co-magnetometry.
Main Results:
- Simultaneous suppression of sensitivity to external magnetic and electric fields was achieved.
- Suppression factors of ≳100 were generically obtained for external field sensitivity.
- The method is applicable to systems with large angular momentum.
Conclusions:
- The developed technique significantly reduces systematic errors in molecular precision measurements.
- This method enhances the ability to measure CP-violating observables like the electron electric dipole moment.
- It provides a robust platform for future searches for new physics in molecules.
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